===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/awk/main.c,v
retrieving revision 1.66
retrieving revision 1.67
diff -u -r1.66 -r1.67
--- src/usr.bin/awk/main.c	2023/11/25 16:31:33	1.66
+++ src/usr.bin/awk/main.c	2023/11/28 20:54:38	1.67
@@ -1,4 +1,4 @@
-/*	$OpenBSD: main.c,v 1.66 2023/11/25 16:31:33 millert Exp $	*/
+/*	$OpenBSD: main.c,v 1.67 2023/11/28 20:54:38 millert Exp $	*/
 /****************************************************************
 Copyright (C) Lucent Technologies 1997
 All Rights Reserved
@@ -23,7 +23,7 @@
 THIS SOFTWARE.
 ****************************************************************/
 
-const char	*version = "version 20231124";
+const char	*version = "version 20231127";
 
 #define DEBUG
 #include <stdio.h>
@@ -180,6 +180,8 @@
 		}
 		if (strcmp(argv[1], "--csv") == 0) {	/* turn on csv input processing */
 			CSV = true;
+			if (fs)
+				WARNING("danger: don't set FS when --csv is in effect");
 			argc--;
 			argv++;
 			continue;
@@ -201,6 +203,8 @@
  			break;
 		case 'F':	/* set field separator */
 			fs = setfs(getarg(&argc, &argv, "no field separator"));
+			if (CSV)
+				WARNING("danger: don't set FS when --csv is in effect");
 			break;
 		case 'v':	/* -v a=1 to be done NOW.  one -v for each */
 			vn = getarg(&argc, &argv, "no variable name");